Singh, R., S. Kumar, and A. P. K. Sinha. “Study of Morbidity Profile of Elderly Attending Urban Health Training Centre of Nalanda Medical College, Patna, Bihar, India”. International Journal Of Community Medicine And Public Health, vol. 5, no. 10, Sept. 2018, pp. 4278-82, doi:10.18203/2394-6040.ijcmph20183959.